Basic Qualification · B-005 Basic electronics and theory · B-005-010-009
Qu'est-ce qui permet à un condensateur de découplage ("bypass") RF d'avoir un effet négligeable sur un circuit audio?
- AUne basse réactance aux fréquences radio
- BUne haute réactance aux fréquences radio
- CUne basse réactance aux fréquences audio
- DUne haute réactance aux fréquences audio
Correct answer: D — Une haute réactance aux fréquences audio. Question tirée de la banque officielle d'ISDE.
Why
An RF bypass capacitor works by offering high resistance, called reactance, to audio signals so they pass through the circuit unchanged instead of being diverted to ground. The full explanation — and one for every question — is in Pro.
Practise this section
Basic electronics and theory is section B-005 of the Basic exam: The theory: Ohm's law, power, series and parallel circuits, AC and DC, frequency and wavelength, decibels, and the metric prefixes the exam leans on.
Drill B-005 — free, no account